/Engine/Source/Runtime/Foliage/Public/ProceduralFoliageComponent.h
Runs the procedural foliage simulation to generate a list of desired instances to spawn.
True if the simulation succeeded
static bool GenerateProceduralContent ( const [FGenerateProceduralContentParams](API\Runtime\Foliage\UProceduralFoliageComponent\FGenerateProceduralContentParams) & InParams, [TArray](API\Runtime\Core\Containers\TArray)< [FDesiredFoliageInstance](API\Runtime\Foliage\FDesiredFoliageInstance) > & OutInstances )